MORE STAFF: Dawn Ostroff is staffing up at Condé Nast Entertainment. She’s hired Jeremy Steckler from Imagine Entertainment and Michael Klein from the Sundance Channel. Steckler, who was executive vice president of production at Imagine, will become executive vice president of motion pictures and will work with Ostroff to acquire and develop film properties. He’ll be based in Los Angeles. And Klein will be responsible for development and production of alternative programming. Previously, he was senior vice president for programming and development at Sundance.